One of the hardest parts of investing is the temptation to time it — to buy when prices are low and wait when they are high. The trouble is that nobody can reliably tell which is which. Pound-cost averaging sidesteps the whole problem by simply investing the same amount, regularly, regardless.
How it works
Instead of investing a lump sum all at once, you invest a fixed amount — say £200 — every month. When prices are high, your £200 buys fewer units. When prices are low, the same £200 buys more. Over time, this means you automatically buy more when things are cheap and less when they are dear, without ever having to decide.
Why it helps
- It removes the guesswork — no agonising over whether today is the right day.
- It tames emotion — you keep investing through scary patches, which is exactly when bargains appear.
- It builds a habit — a monthly direct debit makes investing automatic.
The market wobble that helps you
Counter-intuitively, a falling market is good news for a regular investor still paying in. Your monthly contribution scoops up more units at lower prices, which pay off handsomely when the market recovers. The investors who panic and stop are the ones who miss this. The discipline to keep going is the whole advantage.
A fair caveat
If you happen to have a lump sum and a long horizon, investing it all at once has historically tended to do slightly better on average, simply because markets rise more often than they fall. But pound-cost averaging is gentler on the nerves and fits how most people actually earn — a bit each month. For regular savers, it is less a strategy than common sense made automatic.